前言

自定义全键盘功能，支持中英文切换，使用的开发环境为qt+vs的方式，独立封装成类，如果开发环境不同，拷贝类再导入自己的项目再次编译即可。

一、效果演示

二、环境配置

1、vs配置，见下图：

2、修改样式

3、qss样式代码

QWidget#SoftKeyBoard
{background-color:#5b9bd5;border-radius:20px
}.QPushButton,
.QToolButton
{border-style:solid;border:1.5px solid #215171;color:#386487;padding:0px; border-radius:7px;font: normal bold 20px;background:qlineargradient(spread:pad,x1:0,y1:0,x2:0,y2:1,stop:0 #DEF0FE,stop:1 #C0DEF6);
}.QPushButton:hover,
.QToolButton:hover
{background:qlineargradient(spread:pad,x1:0,y1:0,x2:0,y2:1,stop:0 #F2F9FF,stop:1 #DAEFFF);
}.QPushButton:pressed,
.QToolButton:pressed
{ background:qlineargradient(spread:pad,x1:0,y1:0,x2:0,y2:1,stop:0 #DEF0FE,stop:1 #C0DEF6);
}.QToolButton:checked
{ background:qlineargradient(spread:pad,x1:0,y1:0,x2:0,y2:100,stop:0 #DEF00f,stop:10 #C0DEF6);
}

三、关键程序

1.SoftKeyBoard.h


#ifndef SOFTKEYBOARD_H
#define SOFTKEYBOARD_H#include <QtGui>
#include <QtCore>
#include <QPoint>
#include <QPushButton>
#include <map>
#include <vector>
#include "ui_SoftKeyBoard.h"
#include <QDialog>
class SoftKeyBoard : public QDialog
{Q_OBJECTpublic:SoftKeyBoard(QWidget * parent = 0);QString getValue();void setValue(QString text);
public slots:void OnfocusIn();
signals:void characterGenerated(int character);protected:bool event(QEvent *e);void mousePressEvent(QMouseEvent *event);void mouseMoveEvent(QMouseEvent *event);void mouseReleaseEvent(QMouseEvent *event);void paintEvent(QPaintEvent *);private slots:void saveFocusWidget(QWidget *oldFocus, QWidget *newFocus);void buttonClicked(QWidget *w);void on_btn_language__clicked();void on_btn_caplock__clicked();void on_btn_next__clicked();void on_btn_last__clicked();void on_btn_shift__clicked();void on_btn_backspace__clicked();void on_btn_close__clicked();void on_btn_enter__clicked();private://初始化字库bool InitChinese();bool GetBtnText(QWidget * widget,QString & text,int start,int count);void ShowChinese(QString str,int page,int pos);private:Ui::SoftKeyBoard ui;QWidget * m_lastFocusedWidget_;QSignalMapper m_signalMapper_;QPushButton * m_btns_[65];QPoint m_ptPress_;      //用于拖动窗口bool m_bLeftBtnPress_;bool m_bIsChinese_;     //语言，false:英文，true：中文bool m_bIsUppercase_;bool m_bShiftPressed_;std::map<QString,std::vector<QString> >m_map_;   //汉字库 key:拼音 value:字QString m_strPingying_;  //拼音int m_currentPos_;       //选中的文字位置int m_currentPage_;      //当前页
};
#endif

2.SoftKeyBoard.cpp

data = pd.read_csv('https://labfile.oss.aliyuncs.com/courses/1283/adult.data.csv')
print(data.head())#include <QStyleOption>
#include <QPainter>
#include <QLineEdit>
#include <QFile>
#include <QDateTime>
#include <QMessageBox>
#include <QDesktopWidget>
#include "SoftKeyBoard.h"
#define KeyboardWidth 1280  //键盘宽度
#define KeyboardHeightEnglish 450   //英文键盘高度
#define KeyboardHeightChinese 550   //中文键盘高度
#define btnWidth 70         //按钮宽度
#define btnHeight 70        //按钮高度
#define FatherWidth 1280    //主窗口宽度
#define FatherHeight 800    //主窗口高度
SoftKeyBoard::SoftKeyBoard(QWidget * parent): QDialog(parent),m_lastFocusedWidget_(0)
{ui.setupUi(this);this->setObjectName("SoftKeyBoard");this->resize(KeyboardWidth,KeyboardHeightEnglish);this->setWindowFlags(Qt::Tool| Qt::WindowStaysOnTopHint | Qt::FramelessWindowHint);hide();m_bIsChinese_ = true;m_bIsUppercase_ = false;m_bShiftPressed_ = false;m_currentPos_ = 0;m_currentPage_ = 0;on_btn_language__clicked();m_btns_[0] = ui.char_a_;m_btns_[1] = ui.char_b_;m_btns_[2] = ui.char_c_;m_btns_[3] = ui.char_d_;m_btns_[4] = ui.char_e_;m_btns_[5] = ui.char_f_;m_btns_[6] = ui.char_g_;m_btns_[7] = ui.char_h_;m_btns_[8] = ui.char_i_;m_btns_[9] = ui.char_j_;m_btns_[10] = ui.char_k_;m_btns_[11] = ui.char_l_;m_btns_[12] = ui.char_m_;m_btns_[13] = ui.char_n_;m_btns_[14] = ui.char_o_;m_btns_[15] = ui.char_p_;m_btns_[16] = ui.char_q_;m_btns_[17] = ui.char_r_;m_btns_[18] = ui.char_s_;m_btns_[19] = ui.char_t_;m_btns_[20] = ui.char_u_;m_btns_[21] = ui.char_v_;m_btns_[22] = ui.char_w_;m_btns_[23] = ui.char_x_;m_btns_[24] = ui.char_y_;m_btns_[25] = ui.char_z_;            //字母m_btns_[26] = ui.num_0_;m_btns_[27] = ui.num_1_;m_btns_[28] = ui.num_2_;m_btns_[29] = ui.num_3_;m_btns_[30] = ui.num_4_;m_btns_[31] = ui.num_5_;m_btns_[32] = ui.num_6_;m_btns_[33] = ui.num_8_;m_btns_[34] = ui.num_9_;             //数字m_btns_[35] = ui.btn_left_bracket_;  //左括号m_btns_[36] = ui.btn_right_bracket_; //右括号m_btns_[37] = ui.btn_slash_;         //斜杠m_btns_[38] = ui.btn_quota_;         //引号m_btns_[39] = ui.btn_semicolon_;     //分号m_btns_[40] = ui.btn_backslash_;     //反斜杠m_btns_[41] = ui.btn_comma_;         //逗号m_btns_[42] = ui.btn_dot_;           //点m_btns_[43] = ui.btn_add_;           //加m_btns_[44] = ui.btn_dec_;           //减m_btns_[45] = ui.num_7_;             //7特殊处理，因为包含&m_btns_[46] = ui.word_0_;m_btns_[47] = ui.word_1_;m_btns_[48] = ui.word_2_;m_btns_[49] = ui.word_3_;m_btns_[50] = ui.word_4_;m_btns_[51] = ui.word_5_;m_btns_[52] = ui.word_6_;m_btns_[53] = ui.word_7_;m_btns_[54] = ui.word_8_;m_btns_[55] = ui.word_9_;m_btns_[56] = ui.word_10_;m_btns_[57] = ui.word_11_;           //汉字m_btns_[58] = ui.btn_up_;m_btns_[59] = ui.btn_down_;m_btns_[60] = ui.btn_left_;m_btns_[61] = ui.btn_right_;         //上下左右m_btns_[62] = ui.btn_enter_;         //回车m_btns_[63] = ui.btn_backspace_;     //退格m_btns_[64] = ui.btn_space_;         //空格for(int i = 0;i < 65;++i){m_signalMapper_.setMapping(m_btns_[i],m_btns_[i]);m_btns_[i]->setFixedHeight(btnHeight);//m_btns_[i]->setFixedWidth(btnWidth);connect(m_btns_[i],SIGNAL(clicked()),&m_signalMapper_,SLOT(map()));}connect(qApp, SIGNAL(focusChanged(QWidget*,QWidget*)),this, SLOT(saveFocusWidget(QWidget*,QWidget*)));connect(&m_signalMapper_, SIGNAL(mapped(QWidget*)),this, SLOT(buttonClicked(QWidget*)));connect(ui.wordShow,SIGNAL(focusIn()),this,SLOT(OnfocusIn()));   //设置光标进入 否则进入页面无法wordShow 无法获取光标ui.btn_close_->setFixedHeight(btnHeight);ui.btn_caplock_->setFixedHeight(btnHeight);ui.btn_language_->setFixedHeight(btnHeight);ui.btn_shift_->setFixedHeight(btnHeight);InitChinese();
}bool SoftKeyBoard::event(QEvent *e)
{QKeyEvent *keyEvent = static_cast<QKeyEvent*>(e);if (keyEvent && keyEvent->key() == Qt::Key_Escape){this->close();return true;}switch (e->type()){case QEvent::WindowActivate:if (m_lastFocusedWidget_)m_lastFocusedWidget_->activateWindow();break;case QEvent::Show:{QDesktopWidget* desktop = QApplication::desktop(); // =qApp->desktop();也可以int centerHeight = (desktop->height() - FatherHeight)/2 + FatherHeight;this->move((desktop->width() - this->width())/2,m_bIsChinese_ ? centerHeight-KeyboardHeightChinese : centerHeight-KeyboardHeightEnglish);break;}default:break;}return QWidget::event(e);
}void SoftKeyBoard::saveFocusWidget(QWidget * /*oldFocus*/, QWidget *newFocus)
{if (newFocus != 0 && !this->isAncestorOf(newFocus))m_lastFocusedWidget_ = newFocus;
}void SoftKeyBoard::buttonClicked(QWidget *w)
{if(!w)return;QString text;QString word = "";  //中文int key = -1;if(!m_bIsChinese_)                //英文{if(GetBtnText(w,text,0,26) && text.size() > 0)//英文 字母{key = m_bShiftPressed_ ? (text[0] >= 'A' && text[0] <= 'Z' ? text[0].toLower().unicode() : text[0].toUpper().unicode()) : text[0].unicode();//按下shifttext = text[0];}else if(m_bShiftPressed_ && GetBtnText(w,text,26,20) && text.size() > 0){key = text[0].unicode();text = text[0];}else if(!m_bShiftPressed_ && GetBtnText(w,text,26,19) && text.size() > 0){text = text[2];key = text[2].unicode();}else if(!m_bShiftPressed_ && GetBtnText(w,text,45,1) && text.size() > 0){text = text[3];key = text[3].unicode();}else if(w == m_btns_[58])key = Qt::Key_Up;else if(w == m_btns_[59])key = Qt::Key_Down;else if(w == m_btns_[60])key = Qt::Key_Left;else if(w == m_btns_[61])key = Qt::Key_Right;else if(w == m_btns_[62])key = Qt::Key_Enter;else if(w == m_btns_[63])key = Qt::Key_Backspace;else if(w == m_btns_[64]){text = " ";key = Qt::Key_Space;}//        qDebug()<<__PRETTY_FUNCTION__<<text<<key;//        emit characterGenerated(key);}else                              //中文{if(GetBtnText(w,text,0,26) && text.size() > 0)//字母ShowChinese(m_strPingying_ + text[0].toLower(),0,0);else if(GetBtnText(w,text,46,12) && text.size() > 0) //选中文字{key = text[0].unicode();ShowChinese("",0,0);word = text[0];}else if(m_bShiftPressed_ && GetBtnText(w,text,26,20) && text.size() > 0){key = text[0].unicode();}else if(!m_bShiftPressed_ && GetBtnText(w,text,26,19) && text.size() > 0){key = text[2].unicode();}else if(!m_bShiftPressed_ && GetBtnText(w,text,45,1) && text.size() > 0){key = text[3].unicode();}if(!m_strPingying_.isEmpty())   //有拼音就操作拼音{if(w == m_btns_[58])        //上一页on_btn_last__clicked();else if(w == m_btns_[59])   //下一页on_btn_next__clicked();else if(w == m_btns_[60] && m_currentPos_ > 0)   //上一个，选中ShowChinese(m_strPingying_,m_currentPage_,m_currentPos_ - 1);else if(w == m_btns_[61] && m_currentPos_ < 11)   //下一个，选中ShowChinese(m_strPingying_,m_currentPage_,m_currentPos_ + 1);else if((w == m_btns_[62] || w == m_btns_[64]) && m_currentPos_ >= 0 && m_currentPos_ <= 11)   //enter、空格输入{text = m_btns_[m_currentPos_ + 46]->text();if(text.size() > 0)key = text[0].unicode();ShowChinese("",0,0);}else if(w == m_btns_[63])   //删除一个拼音ShowChinese(m_strPingying_.left(m_strPingying_.size() - 1),0,0);}else                            //没有拼音就直接输入{if(w == m_btns_[58])key = Qt::Key_Up;else if(w == m_btns_[59])key = Qt::Key_Down;else if(w == m_btns_[60])key = Qt::Key_Left;else if(w == m_btns_[61])key = Qt::Key_Right;else if(w == m_btns_[62])key = Qt::Key_Enter;else if(w == m_btns_[63])key = Qt::Key_Backspace;else if(w == m_btns_[64]){text = " ";key = Qt::Key_Space;}}}QString lineText = ui.wordShow->text();int selectStart = ui.wordShow->selectionStart();QString selectText = ui.wordShow->selectedText();const QRegExpValidator* reaExp = static_cast<const QRegExpValidator *>(ui.wordShow->validator());if(m_bIsChinese_)text = word;if(selectStart >=0){lineText = lineText.replace(selectStart,selectText.size(),text);if(reaExp != NULL){//qDebug() << "lineText" << lineText << reaExp->regExp().indexIn(lineText);if(reaExp->regExp().indexIn(lineText) == 0){ui.wordShow->setText(lineText);}else if(lineText == "-");elsereturn;}ui.wordShow->setText(lineText);}else{int cursorPos = ui.wordShow->cursorPosition();lineText = lineText.insert(cursorPos,text);if(reaExp != NULL){//qDebug() << "lineText" << lineText << reaExp->regExp().indexIn(lineText);if(reaExp->regExp().indexIn(lineText) == 0)ui.wordShow->setText(lineText);else if(lineText == "-");   //运行输入负数elsereturn;}ui.wordShow->setText(lineText);ui.wordShow->setCursorPosition(cursorPos+1);}
}void SoftKeyBoard::mousePressEvent(QMouseEvent *event)
{if(event->button() == Qt::LeftButton){m_ptPress_ = event->globalPos();        //记录按下位置m_bLeftBtnPress_ = true;}event->ignore();
}void SoftKeyBoard::mouseMoveEvent(QMouseEvent *event)
{if(m_bLeftBtnPress_)                        //移动窗口{move(pos() + event->globalPos() - m_ptPress_);  //移动窗口m_ptPress_ = event->globalPos();}event->ignore();
}void SoftKeyBoard::mouseReleaseEvent(QMouseEvent *event)
{if(event->button() == Qt::LeftButton)m_bLeftBtnPress_ = false;event->ignore();
}void SoftKeyBoard::paintEvent(QPaintEvent *)
{QPainter p(this);p.fillRect(rect(), QColor(153, 153, 153,127));
}void SoftKeyBoard::on_btn_language__clicked()
{static bool bFirstInit = true;if(m_bIsUppercase_)on_btn_caplock__clicked();m_bIsChinese_ = !m_bIsChinese_;if( bFirstInit && m_bIsChinese_)qDebug()<<"on_btn_language__clicked"<<"open chinese.txt failed.";ui.btn_language_->setText(m_bIsChinese_ ? u8"中文/英文" : u8"英文/中文");m_bIsChinese_  ? ui.widget_chinese_->show() : ui.widget_chinese_->hide();//ui.widget_keyboard_->move(0,m_bIsChinese_ ? 100 : 2);resize(KeyboardWidth,m_bIsChinese_ ? KeyboardHeightChinese : KeyboardHeightEnglish);QDesktopWidget* desktop = QApplication::desktop(); // =qApp->desktop();也可以int centerHeight = (desktop->height() - FatherHeight)/2 + FatherHeight;this->move((desktop->width() - this->width())/2,m_bIsChinese_ ? centerHeight-KeyboardHeightChinese : centerHeight-KeyboardHeightEnglish);
}void SoftKeyBoard::on_btn_caplock__clicked()
{m_bIsUppercase_ = !m_bIsUppercase_;//ui.btn_caplock_->setStyleSheet(QString("#btn_caplock_{color: rgb(255,255,255);background-color:") + (m_bIsUppercase_ ? "rgb(127,122,117)" : "rgb(67,63,59)") + ";border-radius: 7px;}#btn_caplock_:pressed{background-color: rgb(33,30,27);}");for(int i = 0;i < 26;++i)m_btns_[i]->setText(QString(m_bIsUppercase_ ? 'A' + i : 'a' + i ));
}void SoftKeyBoard::on_btn_next__clicked()
{ShowChinese(m_strPingying_,m_currentPage_ + 1,0);
}void SoftKeyBoard::on_btn_last__clicked()
{ShowChinese(m_strPingying_,m_currentPage_ - 1,0);
}void SoftKeyBoard::on_btn_shift__clicked()
{m_bShiftPressed_ = !m_bShiftPressed_;qDebug() << "on_btn_shift__clicked" << m_bShiftPressed_;
}bool SoftKeyBoard::InitChinese()
{QFile file(":/FontLibrary.txt");int i = 0;if(file.open(QIODevice::ReadOnly)){QString str;QString key;while (true){str = file.readLine();if(str.size() < 4)break;key = str.mid(2,str.size() - 3).replace("\r","");m_map_[key].push_back(str.left(1));++i;}file.close();return true;}return false;
}bool SoftKeyBoard::GetBtnText(QWidget *widget, QString &text, int start, int count)
{text = "";for(int i = start;i < start + count;++i){if(widget == m_btns_[i]){text = m_btns_[i]->text();return true;}}return true;
}void SoftKeyBoard::ShowChinese(QString str,int page,int pos)
{qDebug()<<"ShowChinese"<<str<<page<<pos<<"current"<<m_strPingying_<<m_currentPage_<<m_currentPos_;if(page < 0)page = 0;if(pos < 0 || pos > 11)pos = 0;std::map<QString,std::vector<QString> >::iterator it = m_map_.find(str);ui.lab_pinying_->setText(str);if(it != m_map_.end() && it->second.size() < page * 12)//没有下一页return;for(int i = 0;i < 12;++i){qDebug() << (it != m_map_.end()) << m_map_.size();m_btns_[46 + i]->setText(it != m_map_.end() && it->second.size() > page * 12 + i ? it->second[page * 12 + i] : "");//qDebug()<<"on_btn_language__clicked"<<m_btns_[46 + i]->text()<<i;}if(m_btns_[46 + pos]->text().isEmpty())pos = m_currentPos_;m_strPingying_ = str;m_currentPage_ = page;m_currentPos_ = pos;
}void SoftKeyBoard::on_btn_backspace__clicked()
{QString lineText = ui.wordShow->text();int cursorPos = ui.wordShow->cursorPosition();if(cursorPos>0)lineText.remove(cursorPos-1,1);ui.wordShow->setText(lineText);if(cursorPos-2 >= 0)ui.wordShow->setCursorPosition(cursorPos-2);
}void SoftKeyBoard::on_btn_close__clicked()
{qDebug() << "Cancel" ;done(QMessageBox::Cancel);close();
}void SoftKeyBoard::on_btn_enter__clicked()
{qDebug() << "Ok" ;done(QMessageBox::Ok);close();
}QString SoftKeyBoard::getValue()
{return ui.wordShow->text();
}void SoftKeyBoard::setValue(QString text)
{ui.wordShow->setText(text);ui.wordShow->setFocus();
}void SoftKeyBoard::OnfocusIn()
{qDebug() << "OnfocusIn";// MyCommon::WaitForAMoment(100);ui.wordShow->setCursorPosition(ui.wordShow->text().size());ui.wordShow->activateWindow();ui.wordShow->setFocus();// this->activateWindow();
}

四、程序链接

https://download.csdn.net/download/u013083044/87517353?spm=1001.2014.3001.5503

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QT-全键盘支持中英文

QT-全键盘支持中英文

前言

一、效果演示

二、环境配置

三、关键程序

1.SoftKeyBoard.h

2.SoftKeyBoard.cpp

四、程序链接

QT-全键盘支持中英文相关推荐

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